Abrading machines



Dec. 27, 1960 J. S.-FLEMING ,96 1

ABRADING MACHINES Filed June 25, 1957 2 Sheets-Sheet 1 Dec. 27, 1960 J.5. FLEMING 2,966,012

ABRADING MACHINES Filed June 25, 1957 2 Sheets-Sheet 2 7a e i BY 20Wfh,-Gl l \3Uvm,

ATTORNEY United States Patent nice 2,966,012 Patented Dec. 27, 1960ABRADING MACHINES John Stuart Fleming, 117 Bulfalo Ave., Niagara Falls,NY.

Filed June 25, 1957, Ser. No. 667,855

2 Claims. (Cl. 51-78) The invention relates to abrading machines formaking articles from a work sheet, a primary object being to provide anabrading machine for making the paper blank having the fold lines of theFleming patent for Manicure Tool, No. 2,711,747, dated June 28, 1955,and for making a dental cleaner of any suitable pattern having the softself-cushioned edge of the Fleming Patent No. 2,771,084, dated November20, 1956.

Referring to the first named patent, the paper blank for the manicuretool can be cut from a sheet of flexible paper and its subdivisionsfolded upon fold lines thereof upon one another to bring them closetogether by a manual operation, but the process is slow and saidsubdivisions are with difliculty folded upon one another to bring themclose together. An object of the invention is to provide an abradingmachine for rapidly making said blank singly or in multiple by abradingthe peripheral outline of said blank in and completely through anddisconnecting said blank from said paper work sheet and simultaneouslyabrading said lines in and incompletely through the work sheet inintaglio, upon which abraded fold lines said subdivisions may be foldedupon one another to bring them close together Wih no difiiculty.

Referring to the second named patent, a strip of flexible paper can betorn from and along a weakened tear line of a sheet of said paper bycareful manipulation in such manner as to provide said strip with a softselfcushioned edge extending along it as a border, but the process isslow and the tear tends to depart from the tear line. An object of theinvention is to provide an abrading machine for rapidly making paperblanks having weakened lines defining subdivisions thereof by abradingthe peripheral outlines of said blanks in and completely through anddisconnecting said blanks from a paper work sheet, and simultaneouslyabrading said lines in and incompletely through the work sheet inintaglio to define dental cleaner strips of any suitable pattern, alongwhich abraded tear lines said strips may be torn from said sheet with notendency to depart from the tear lines, thereby providing each of saidstrips with the soft self-cushioned edge of the second named patent.

Another object is to provide an abrading machine for rapidly making adental cleaner strip having a soft selfcushioned edge extending entirelyaround it as a border, singly or in multiple, by abrading the peripheraloutline of said strip having said soft edge in and completely throughsaid work sheet.

Other objects and advantages will appear hereinafter or will be obvious.

The invention consists in the novel construction and combination ofparts as hereinafter set forth in the claims.

In the accompanying drawings,

Figure 1 is a diagrammatic end view of the machine, with one of the sideplates of the fixed frame removed, showing the paper sheet, the raisedpattern, and details of the raised pattern of varying cross sectionalcontours.

Figure 2 is a diagrammatic side view of the two cylinders, partly brokenaway and on a much enlarged scale,

showing the paper sheet in section, and details of the raised pattern ofvarying cross sectional contours.

Figure 3 is a diagrammatic sectional view of the paper sheet as in Fig.2, having abraded therein details of the duplicates of the raisedpattern of varying cross sectional contours.

Figure 4 is a plan view of the paper blank for the manicure tool.

Figure 4a is an edge View of the same.

Figure 5 is a plan view of the quadrilateral sheet.

Figure 5a is an edge view of the same.

Figure 6 is a plan view of the dental cleaner strip.

Figure 6a is an edge view of the same.

Figure 7 is a section on the line 77, Fig. 7a.

Figure 7a is a detail fragmentary plan view on a much enlarged scale ofa fragment of the paper having the soft edge abraded therein.

In the drawings 1 designates a fast rotating abrading cylinder and 2 aslowly rotating impression cylinder parallel thereto, said impressioncylinder having upon its cylindrical face the raised pattern 3 in cameoof a specific article to be made, such for example as the pattern of thepaper blank 4 having the fold lines 4 of the first named patent, saidcylinders being spaced apart from each other by a distance greater thanthe thickness of the paper work sheet fed between said cylinders.

The two cylinders are arranged so that they are just clear of touchingat the highest point or top of said pattern, said cylinders beingrotated as stated and the thin flexible paper or work sheet A fedbetween the cylinders,

thereby causing said pattern to force the paper against the abradingcylinder and abrading the peripheral outline of said blank and said foldlines in the paper work sheet A, the depth of the abrasion in the worksheet being determined by the thickness of said pattern. The abrasion inthe work sheet starts as said pattern presses or forces the work sheetagainst the abrading cylinder and proceeds downwardly, so that thehighest point or top of the pattern determines the lowest point of theabrasion in the work sheet. 5, 5, designate guide rollers for the worksheet A. The peripheral outline of said blank is abraded in andcompletely through and said blank disconnected from the work sheet. Thefold lines 4' of said blank 4 are abraded in and incompletely throughthe work sheet in intaglio, thereby making said paper blank upon theabraded fold lines of which its subdivisions can be folded upon oneanother to bring them close together with no difficulty. The abradingcylinder may be substituted by a cylindrical pulley for an abradingbelt. Abrading belts of varying degrees of fineness or coarseness toaccord with the character of the work to be done are readily obtainable.

The pattern of the peripheral outline of said blank is continuous alongsaid outline circumferentially of the impression cylinder and adapted toforce the work sheet continuously against and in non-slip engagementwith the abrading cylinder during said abrasion.

Referring to Fig. 5, wherein said pattern 3 is that of a quadrilateralsheet of flexible paper having the soft self-cushioned edge 6 of thesecond named patent, said soft edge being beveled and having the pulp ofsaid paper exposed upon one side 6' thereof, and having weakened tearlines '7 defining dental cleaner strips 8, the peripheral outline ofsaid blank having said soft edge is abraded in and completely throughand said blank disconnected from the work sheet, said weakened tearlines being simultaneously abraded in and incompletely through the worksheet in intaglio, thereby making a paper blank having said softcushioned edge 6 and weakened tear lines 7 defining dental cleanerstrips 8, along which abraded tear lines said dental cleaner strips maybe torn from said blank with no tendency to depart from the tear lines.

Referring to Fig. 6, wherein said pattern 3 is that of a dental cleanerstrip 9 of flexible paper having a peripheral soft edge 9', theperipheral soft edge is abraded in and completely through said paper,thereby making a dental cleaner strip having a peripheral soft edge.

The cross sectional contour of the peripheral outline of said patterndetermines the cross sectional contour of the corresponding abrasion inthe work sheet, as shown in Fig. 2.

The abrading cylinder and the impression cylinder are rotated at anysuitable respectively fast and slow speeds, to accomplish the statedresults. The work sheet may consist of paper or any other suitablematerial. The pattern 3 may be acid etched in a sheet of thin flexiblemetal bent around and suitably secured to the impression cylinder torotate therewith.

The right is reserved to modifications coming within the scope of theclaims.

I claim:

1. In an abrading machine for making a paper blank having weakened linesdefining subdivisions thereof from a work sheet, means for abrading theperipheral outline of said blank in and completely through anddisconnecting said blank from the work sheet and simultaneously abradingsaid lines in and incompletely through the work sheet, comprising a fastrotating abrading cylinder and a slowly rotating impression cylinderparallel thereto, said impression cylinder having upon its cylindricalface in relief and concentric therewith the pattern of the peripheraloutline of said blank and the pattern of said lines, the pattern of saidlines being of less height than that of said outline, said cylindersbeing spaced apart by a distance greater than the thickness of the worksheet fed between said cylinders over and in engagement with the outerextremity of the pattern of said outline, the patterns of said outlineand said lines being continuous circumferentially of the impressioncylinder and adapted to force the Work sheet continuously against and innon-slip engagement with the abrading cylinder during said abrasion.

2. An abrading machine as defined in claim 1, in which the pattern ofsaid outline has a beveled cross sectional contour adapted to abrade inand completely through the work sheet along the periphery of said blanka soft cushioned bordering edge beveled upon one side thereof.

References Cited in the file of this patent UNITED STATES PATENTS404,582 Wheeler June 4, 1889 1,648,040 Bliss Nov. 8, 1927 1,838,116Shuhan Dec. 29, 1931 2,218,674 Eaton Oct. 22, 1940 2,801,501 Marogg Aug.6, 1957

